I knew it would happen eventually...I have to protect my seedlings from a 2 year old, 4 year old and two cats, so I have my grow light set up upstairs behind a tall baby gate. I put a few pots of onion seedlings in water this evening and went downstairs while they soaked it up, went back up and they were upside down on the floor. I guess my cats tried drinking out of the tray and knocked them over. ugh. Good thing I have back ups!!